78L05-300 from UMW, in a SOT-89-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OUTPUT	power_out	Regulated +5 V output. Typ 5.00 V (4.92-5.08 V at Tj=25 C). Capable of up to 300 mA continuous, 500 mA peak. Requires a Co ≈ 0.1 µF ceramic to GND for stability.
2	GND	power_in	Common ground reference for input and output. Also acts as the thermal/tab connection on SOT-89 (center pad).
3	INPUT	power_in	Unregulated DC input, 7 V to 20 V typical operating range for the 78L05, absolute max 35 V. Bypass with a Ci ≈ 0.33 µF ceramic to GND close to the pin.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOT-89-3
Category	PMIC
Pins	3

CAD (KiCad official)

Symbol: 78L05-300
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`78l05-300.step`	57 KB	You want the bare part, or you mark your own boards.
`78l05-300-etched.step`	1.4 MB	You want the part with `78L05-300` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 377 faces against 42 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: UMW datasheet (15 pp, sha256 43e8779d625b95a5, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF